Iranians celebrate birth anniversary of Imam Mahdi

Thousands of Iranians gathered at Jamkaran Mosque, Qom, on Friday to celebrate the birth anniversary of Imam Mahdi, the twelfth Shiite imam.
Imam Mahdi - who Shi'ites believe was a descendent of the Prophet who went into hiding 1,000 years ago and will return to establish global Islamic rule before the end of the world.